Cultivator.



G. GILBERTSON.

GULTIVATOR.

APPLICATIOB FILED APB.21, 1910.

Patented D60. 20, '1910.

2 snn'rss'nnn'r' 2. //J l l l /v f zag i667 @auf rr Rs ce., WASHING ou n c PATNT GEORGE GILBERTSON, F BLOOIVIFIELD, NEBRASKA.

CULTVATOR.

Specification of Letters Patent.

Patented Dec. 20, 1910.

Application led April 21, 1910. Serial No. 556,771.

To all whom it may concern:

Be it known that l, GEORGE GiLnnn'rsoN, citizen of the United States, residing at Bloomfield, in the county of Knox and State of Nebraska, have invented certain new and useful Improvements in Cultivators, of which the following is a specification.

This invention relates to cultivators, and refers particularly to an implement for breaking sod and clearing weeds accumulating between the rows of corn or other growing crops.

An object of this invention is to provide a skim cultivator with a flat share adapted to loosen and to raise sod and weeds, the flat share being provided with a plurality of spaced and rearwardlyT extending fingers to break up the sod and the earth supporting .the weeds.

JThe invention further comprehends a skim cultivator provided with a. hinged frame for supporting the flat` share, and a pair of disks arranged rearwardly on the share, and lifting means on the main frame so as to effect av vertical adjustment of the share and the disks relative to the ground surface and the main supporting frame.

)L still further object of this invention is to forni a cultivator with a double arched bar to straddle two rows of growing crops, and to adjustably support for operation between the rows.

F or a full understanding of the invention and the merits thereof, and to acquire a knowledge of the details of construct-ion, reference is to be had to the following description and accompanying drawings, in which:

Figure 1 is a top plan view of the improved cultivator in position over two rows of growing crops. 2 is a rear elevation of the same. `Fig. a longitudinal section through the improved cultivator.

Corresponding and like parts are referred to in the followino` description and indicated in all the views of the drawings by the saine reference characters.

Referring to the drawings the numeral designates a double. arched bar, the arched portions 11 and 12 being formed adjacent the extremities of the bar. Supporting wheels 125 are suitably connected to the ends of the bar 10 to support the main frame of the cultivator. The frame of the cultivator is provided with a tongue 14 which is sethe hinged frame cured centrally upon the. bar 10. A pair of straps 15 are carried upon the upper face of the tongue 14 and passed over the bar 10. The tongue 14 carries a Whittle-tree 16 extending transversely of the tongue and having at its ends the swingle-trees 17 to which are attached the draft animals for operating the implement. Any arrangement of the whittle-tree and the swingle-trees may be employed which is found convenient and practical in the use of the implement. The tongue 14 is provided with a spring seat post 18 which is secured to the tongue 14 forwardly of the arched bar 10 and which extends upwardly and backwardly in the wellknown inanner to support the seat 19.

The main frame is provided with a hinged frame, the same comprising a pair of curved bars 20 which converge at the forward end of the frame and are pivotally supported, for vertical movement, upon an eye bolt 21 extending transversely through the rear end of the tongue 14 forwardly of the attached bar 10. The bolt 21 is held in position by a clamping nut 22 resting upon the upper face of the tongue 14 and carried in threaded relationupon the upper bolt 21. A pivot pin 23 is positioned transversely through the forward ends of the curved bars 20 and the eye-bolt 21. A cross brace 24 is positioned between the curved bars 2() midway between the extremities thereof. A longitudinal brace 25 is positioned centrally within the hinged frame, terminating at its extremities in the forward ends of the curved bars 20 and centrally of the cross brace 24. The cross brace 24 carries a depending standard 26 having oppositely extending flanges 27 at its upper end to seat against the under face of the cross brace 24. The standard 26 depends over the central portion of the hinged frame and supports a flat share 28 upon its lower end. rEhe share 28 is substantially of V-form, the opposite blades 29 of which diverge rearwardly from the lower ends of the standard 26. The share 28' is disposed in a substantially horizontal position and carries a plurality of spaced and rearwardly extending fingers 30. rlhe fingers 30 are secured in the rear edge of the share 2S which is thickened and suitably apertured for the reception thereof. From Fig. 2 of the drawings it will be observed that the standard 26 is provided with a dovetailed tongue 31 tting into a correspondingly torined groove in the uppertace iti-om the hinged traine, and a pair of disks ot' the share 28 at its central portion.

rthe longitudinal brace carries a depending arm 32 in the lower end ot which is suitably mounted a colter 33. rthe colter is in direct alineinent Vwith the standard Qt and serres the tune-tion ot cutting the sod or earth prior to the striking of the standard Ztl thereagainst. By the cutting the sod and earth is passed oppositely and backwardly over the share The standard Qt is beveled at its opposite sides and at its lrorwnrd edge to torni a forward cutting edge 3% to separate the sod and the earth as it is passed over the share The rear extremities ot the curved bars 2O are beveled inwardly as at to support in angles corresponding to the beveled tacos, a pair ot dil 3G. rlhe disks 3G are diagonally arranged inniiediately behind the fingers 30 and i eive the earth t'rom the tingers, and detlect the saine toward the rows t growing plants at the opposite sides ot the hinged traine.

The arched bar l() is provided with a pair ot segments ST. which extend upwardly theretroin and in sp: ced relation at the opposite side ot the tongue 141:. to carry a pair ot hand levers 8S which coiipe 'ate with the segments to lock the hinged traine in various adjusted positions. The hand levers 3S are pivoted at their lower ends upon the segments 23T. ant, are provided with rearwardly projecting arms 39 to supporti the forward end ot links gli). the links 4t() extend downwardly 'trous the outer ends ot the arms 530 and are hinged against the outer 'faces oi the curved bars QG.

lt is readily seen that with this construction the hinged trame may be raised or lowered, by the action ot the hand levers 38, to dispose the share Q8 at the desired depth beneath the ground surface. The wheels 13 travel at the outer sides oit the rows ot growing crops and the arched portions and lf2 ii receive the plants or stalks thereunder without bending the saine. [is the implement: travels forwardly the coller 33 divides the sod or earth centrally ot the implement and the share QS passes beneath the sod or the earth and raises 'the saine to 'l'eed the earth to the tingers 530. spaced. the earth icallsA between the lingers and is partially overtiu-ned and brokeniup. rihe earth is delivered Yfrom the ends ot tlie share QS and is received by the disls StB and detlected towa d tlfe opposite sides ot the hinged traine.

ll'aving thu-1 described the invention what is claimed as new is:

l. skim cultivatior including a` traine adapted to straddle the two rows ot growing plants. a hinged trame carried upon said main traine to travel between the rows ot growing plants, av flat share depending ,is the lingers 30 are' carried by the hinged traine and rearwarf'lly oit the ends oit said dat share.

2. )t skim cultivator including a traine adapted to stri ddle rows ot' growing plants, an adjustable traine hinged to said main trame to travel between the rows ot growing plants, a standard depending trom the hinged trame n'iidway oi its ends and haring a toi-ward cutting edge, a tlat share carried upon the lower end ot said standard and having rearwardly diverging blades, a plurality oit spaced lingers rearwardly eX- tending troni the share, and a. pair ot spaced disks upon the rear end ot said hinged traine. y

3. fr cultivator including a main trame,

a tongue carried by the trame, an eye bolt depending :trom the rear extremity ot the tongue, a pair ot curved bars hinged at their forward ends upon the lower end ot the eye bolty a cross brace carried by the curved bars midway ot' their ends, a longitudinal brace positioned between the forward ends ot the curved bars and the central portion ot said cross brace, a tlat share depending` from the central portion oit said cross brace, a colter depending troni said longitudinal brace and Aforwardly ot the share, and a pair ot spaced disks diagonally ar 'anged upon the rear ends ot the said curved bars.

t. A cultivator including a main traine, a hinged trame adjustably mounted upon said trame, a itat share depending trom said hinged trame, a colter carried centrally upon the hinged tramo and forwardly ot the share and a pair ot spaced disks carried upon the rear extremity ot said hinged traine.

5. A cultivator including a double arched bar, wheels carried on the ends ot said bar tor supporting the same, a, tongue mounted centrally upon the bar, an eye bolt depending trom the rea-r end ot the tongue, a pair of curved bars hinged upon the eye bolt tor vertical movement and. diverging rearwardly therefrom, segments carried upon the arched bar at the opposite sides ot the tongue, hand levers pivoted upon the segments, arins extending vfrom the lower ends ot the hand levers, links carried b v the arins and pivotally connected to said bars to vertically adjust the saine, a cross brace carried by the curved bars midway ot their ends, a longitudinal brace disposed between the torward ends ot said curved bars and the central portion ot said cross brace, a 'fiatshare depending :trom the central portion ot said cross brace, a colter arranged upon the longitudinal. brace torwzndly Vot said share and a pair ot spaced disks carried upon the eX- treinities ot said curved bars. i

6, A cultiv; tor including a double arched bar adapted to straddle two rows ot growing plants, wheels on the ends of the bar to llt) support the same, a tongue carried by the bar at its central portion, a hinged frame adjustably disposed upon the rear end of the tongue to travel between the rows of growing plants, a share depending from the central portion of the hinged traine and having oppositely extending,` blades, spaced and horizontal lingers rearwardly projecting from said share, a pair of spaced disks carried atthe rear end and at the sides of the hinged franie forwardly of said share.

T. A eultivator including a frame, a eolter on the fraine to out sod, a flat share on the frame behind the oolter to separate the out sod, horizontal blades carried on the share 'for raising the sod, spaced lingers extending rearwardly from the blades for breaking up the sod, and spaced disks disposed in angular relation upon the frame for detlecting the broken earth toward the rows of plants at the sides of the frame.

In testimony whereof, I afix iny signature in presence of two witnesses.

GEORGE GILBERTSON. 

